SilkSac is designed for multiple usage. It comes with a removable 100% silk batting inside the sleep sack. In warm environment, you can remove the silk batting layer so you can still put your baby inside the SilkSac under a thin layer of cotton fabric. In cold environment, you can reinsert the silk batting, and your baby will be wrapped in soft silk bedding, helping her to sleep through the night. The outer layer of the sleeping sack also serves as a protector for the silk batting inside, so you will only need to wash the outer layer and never have to wash the silk batting.

Temperature Chart

SilkSac with Silk Batting

Ideal Nursery Temperature of 50°F - 71°F

SilkSac without Silk Batting

Ideal Nursery Temperature of 72°F - 80°F.

Size Chart

SilkSac 2 & 3:

Small (0-12 Months)

Length: 28 Inches

Child Height: Up To 32 Inches

Medium (12-24 Months)

Length: 36 Inches

Child Height: Up To 40 Inches

Large (24 Months - 5 Years Old)

Length: 46 Inches

Child Height: Up To 52 Inches

Original SilkSac:

Small (0-9 Months)

Length: 26 inches

Child Height: Up To 30 Inches

Large (9-18 Months)

Length: 32 inches

Child Height: Up To 36 Inches

For most babies, the ideal time to start using SilkSac is at six weeks or when your baby is over 10 pounds in weight as newborns should be swaddled. The size chart is provided for reference only. Parents should select the appropriate size according to the actual length of the baby. We do not recommend parents purchasing oversized SilkSac as it will not fit the baby properly.

Special Note:

It is always recommended to dress your child in a body suit or onesie before wearing SilkSac. Parents can control the level of warmth by dressing their child with extra layers of clothing if the nursery temperature is below 60°F. Please note that the temperature guideline is provided for reference only. Every baby is different in his/her heat tolerance. So adjust the temperature guide and the layers of clothing to wear accordingly to fit the baby. Parents should not over dress the baby as overheating can be a cause of SIDS.